XXII Annual Scientific Meeting, Tucuman Biology Society ...

186 ABSTRACTS
81.
LEAF EPIDERMIS OF CHUSQUEA AND RHIPIDOCLADUM
(POACEAE, BAMBUSEAE) FROM TUCUMAN PROVINCE
Parrado MF 1 , De Marco N 2 .
1 Fundación Miguel Lillo. Miguel Lillo 251. 2 Facultad de Agronomía
y Zootecnia de la Universidad Nacional de Tucumán. Avda. Roca
1900. (4000) San Miguel de Tucumán.
E- mail: ronqui@arnet.com.ar
Chusquea Kunth and Rhipidocladum McClure are American genus
of shrubby bamboos. Both of them are represented in Tucumán
Province including one species each, Chusquea lorentziana Griseb.
and Rhipidocladum neumannii Sulekic, Rugolo & L. G. Clark. The
objectives of this paper are: to describe the abaxial and adaxial leaf
epidermis of Chusquea lorentziana Griseb. and Rhipidocladum
neumannii Sulekic, Rugolo & L. G. Clark. and also to determine
the micromorrphologic characters of taxonomic value to differentiate
both entities. Observations were accomplished by means of
optical and scanning electron microscopy. The following elements
are described on the abaxial and adaxial epidermises: costal and
intercostal zones, long cells, short cells, stomata, macro-hairs, micro-hairs,
prickles and papillae. The diagnosis micromorphologic
characters are the differentiation of costal and intercostal zones,
estomata and macro-hairs. The analysis of the epidermises in surface
view of both species revealed that differentiation characters
do exist for identification.
82.
RAPHANUS SATIVUS L. (nabón), A WEED WITH
FUNGITOXIC ACTIVITY
Sgroi NA 1 , Selis AN 2 , Vattuone AM 3 , Quiroga EN 3 .
1 Cátedra de Química Analítica; 2 Cátedra de Física II, Facultad de
Agronomía y Zootecnia. UNT. Av. Roca 1900. 3 Cátedra de
Fitoquímica, Instituto de Estudios Vegetales “Dr. R. Sampietro”,
Facultad de Bioquímica, Química y Farmacia. Ayacucho 471. UNT.
San Miguel de Tucumán. Argentina. E-mail: nsgroi31@hotmail.com
/ insveg@unt.edu.ar
The search of new substances with antifungal activity to be applied
to protec plants and to preserve food and feed is an important
task. The aim of our work was the search of fungitoxic principles
present in Raphanus sativus L. (nabón). R. Sativus L. is a weed
that spontaneously grows in the northwest of Argentina. The used
phytopathogenic and xylophagous fungi and yeasts were isolated,
identified and conserved in the Cát. de Fitoquímica, Fac. de Bioq.,
Qca. y Fcia., UNT. Ethanolic and aqueus extracts were prepared
from dry flowers. The biological activity was determined by bioautography,
radial growth tests and growth zonal inhibition. The
tincture was the most active preparation. Bioautographic assays
showed different degrees of growth inhibition on the outlined fungi.
Radial growth of xylopha gous fungi was inhibited between 30-
92% with 0,15 mg of phenolic compounds/mL in the culture medium.
The behavior of phytopathogenic fungi and yeasts was variable
(21-100% of inhibition). Fungal zonal inhibition showed that
the tincture extract has a high inhibition on Aspergillus nomius VSC
23 and Aspergillus flavus. Our results revealed the presence of
biomlecules with activity in the ethanolic extracts of Raphanus
sativus L. (nabón).
BIOCELL 30(1), 2006
83.
PREVAILING OF NON-LIPIDICS CARDIOVASCULAR
RISK FACTORS IN A POPULATIONS OF STUDENTS
Cardinale M, Coromina E, Olmos Fassi J, Morales M, Coviello A,
Bianchi J.
Facultad de Odontología (UNT). Avda. Benjamin Araoz 800. S.M.
de Tucumán. E-mail: marcecardi@hot mail.com
Introduction: Cardiovascular disease is the main cause of death
in industrialized countries.
Objective: To know prevailing of nonlipidics cardiovascular risk
factors in a population of students of both sexes between 19 and 25
years.
Materials and methods: The population was of 195 women and
66 men. Corporal mass index, a questionnaire to register familiar
antecedents of cardiovascular morbid-mortality, arterial pressure
and heart rate in 3 opportunities were registered. Results: a significant
difference for values of systolic, diastolic, mean arterial
pressure, and coroporal mass index (p